-ene bbbb bbdd bbeb bbrc bcbc bccc bcde bcec bcer bcnu bcru bcuc bd-r bdbc bddc bebb bebe beck becu bede bedu beeb beed beek been beer beke bend bene benk benn benu berc berd bere berk bern berr beru beuk beur bner bnrr brcb brce breb brec bred bree brek bren brer brkb brrr bruc brud brue brun bubb bube bubu bucc buce buck bucu budb budd bude budu buen buer bueu buke bukk buku bunb bund bune bunk bunn bunu bur- burb burd bure burk burn burr buru c-cd cbbc cbcc cbce cbcn cbcr cbcu cbdb cbdc cbdn cbec cbee cber cbkn cbkr cbnd cbrd cbre cbrn ccbc ccbn cccb cccc cccu ccdc ccdn ccdr cced ccee ccnb ccnc ccne ccnr ccnu ccrc ccre ccuc cd-e cd-r cddb cddr cdec cder cdnb cdnc cdre cebu cec- cece cedd cede cedu ceeb ceec ceke cen- cend cene cer- cerc cerd cere cern ckbc ckbe ckck ckdu cken cker cknb cknc ckrc ckrd cnbc cndd cnrc cnrr crbc crbu crcc crce crcr crdc cre- creb crec cred cree cren creu crkc crne crub crud crue cruk crun cub- cubb cube cucc cuce cuck cucn cude cued cuek cuer cuk- cuke cund cune curb curd cure curn curr dbcc dbrn dcbc dccb dccc dccu dcdb dcrk dddd ddrc ddre ddub debe debu dec- decc decd dece deck dedd dede dedu deeb deed deek deen deer dek- deke dene denk denn denu der- derb derc dere derk dern derr deue deuk deur dkdc dnce dner dnrc dnuk drbc dred dree drek dren drub drue druk druu dub- dubb dubc dube dubu duce duck dudd dude dudu duer duke duku dunc dune dunk dunn dure durk durn duru duur ebbc ebbr ebcc ebed eben eber ebru ebur ecbc ecbe eccb eccc ecce ecdc eced ecne ecrc ecrr ecru eddc edde ede- eden eder edrn edru educ edun edur eede eedu eeee eeke eend eerc ekeb eked ekek eken eker ekne ekur enb- enbn enbr ence end- ende endu ened enee ener enke enkr ennc enne ennu enue enur erbb erbe ercc erce erde ereb erec ered eren erer erke erne errc erre erub eruc erur eubc eucd eude euer eur- eurc eure kbbb kbbc kbbd kbbe kbbk kbbr kbbu kbcb kbce kbck kbcr kbcu kbdb kbde kbdn kbdr kbeb kbec kbed kbee kbek kben kber kbkb kbkk kbkr kbnd kbnn kbnr kbnu kbrb kbrc kbrd kbre kbrk kbrn kbru kbub kbuc kbud kbue kbuk kbun kbur kbuu kcbc kcbd kcbk kcbr kcbu kccb kccc kccd kcck kccr kccu kcdc kcdd kcdr kcdu kceb kcec kced kcee kceu kckc kckk kckn kckr kcnb kcnd kcnr kcrc kcrn kcrr kcru kcub kcue kcuk kdbb kdbn kdbr kdcc kdcd kdce kdcr kddb kddc kddd kddk kddr kdeb kdec kden kdkb kdkd kdkk kdkn kdkr kdnd kdne kdnk kdnn kdnr kdrb kdub kduc kdun kdur kebb kebc kebe kebn kebr kebu keck kecr kedb kedc kedd kede kedr keed keek keen keer kekb kekc keke keku ken- kend kene kenk kenn kenr kenu ker- kerb kerc kere kerk kern kerr keru keun keur kkbb kkbd kkbe kkbn kkbr kkcb kkcd kkck kkcn kkcr kkdc kkdd kked kken kkkk kknb kknd kkne kknn kknu kkrb kkrc kkre kkrk kkrn kkrr kkuu knbb knbc knbe knbn knbr knbu kncb knce knck kncn kncr kncu kndb kndc kndd knde kndk kndn kndr kndu kneb knec kned knee knek knen kneu knkk knnb knnd knnk knnr knrb knrk knub knud knue knuk knur krbb krbd krbe krbk krbr krcb krcc krcd krce krcn krcu krdc krdd krde krdr krdu kreb krec kred kree krek kren kreu krkc krkd krke krkk krkn krkr krku krnb krnd krne krnk krnn krnu krrb krrc krre krrk krrn krrr kruc krue kruk krun krur kubb kubc kubd kube kubr kubu kucb kucc kucd kuce kucr kudd kude kudu kued kuek kuen kueu kuke kukk kukn kuku kunc kund kune kunk kunr kunu kurb kurd kure kurk kurr kuru kuub kuuk kuur kuuu nbbc nbcc nber ncbc nccc nccn nccr nccu ncdc ncdn ncdr ncdu ncec nced ncee ncen ncer ncnc ncnd ncrc ncre ncue ncuk ndcc nddb ndde nder ndrc ndre nebb nebe nebn nebr nebu necc nece neck necr nedc nedd nede nedu neeb need neen neer neke neku nend nene nenu nerc nerd nere nerk nerr neru neuc neue neuk neun neur neuu nndb nnnn nrdc nren nrrc nrrd nubc nube nubk nuce nuck nucu nudc nudd nude nuee nuer nuke nuku nunc nune nunk nunn nurc nurd nure nurn nurr nuru nuuk rbbb rbbr rcbc rccb rccc rcdc rcde rcnr rcrd rder rebb rebe rebk rebu recc recd rece reck recr recu redc redd rede redr redu reeb reed reek reen reke rend rene renk renn renu rerd rere reru reue reuk reuu rnbr rndc rred rrrr rrun rubb rube rubu ruce ruck rudd rude rued ruen ruer ruke rukk rukn ruku runc rund rune runk runn rurc rurd rure ruru ruud ruun ubbe ubek uber ubud ucbc ucdc ucdd ucrc udbc uden uder uduk udun uend ukcc ukek ukeu uknc ukrc ukur unbd unbe uncc unce unde uneb unec uned unee unen uner unke unkn unne urbe urde urdu ure- ured urke urne urre uruk urun urur uuen uuuu